应用化学 ›› 1998, Vol. 0 ›› Issue (6): 74-76.

• 研究论文 • 上一篇    下一篇

用尖晶石型化合物NiCo2O4和复合镀技术制备析氧电极

蔡乃才, 张克立, 袁继兵, 刘勇, 孙聚堂   

  1. 武汉大学化学系 武汉430072
  • 收稿日期:1998-04-15 修回日期:1998-09-22 出版日期:1998-12-10 发布日期:1998-12-10
  • 基金资助:
    国家自然科学基金

Preparation of Oxygen Evolution Electrode from Spinel NiCo2O4 by Composite-Plating Technique

Cai Naicai, Zhang Keli, Yuan Jibing, Liu Yong, Sun Jutang   

  1. Department of Chemistry, Wuhan University, Wuhan 430072
  • Received:1998-04-15 Revised:1998-09-22 Published:1998-12-10 Online:1998-12-10

摘要: 为减少析氧电位、提高电极的稳定性、降低能耗和成本,人们一直在努力合成各种过渡金属复合氧化物作为析氧的电催化材料[1].研究表明,尖晶石型化合物NiCo2O4对氧的析出有较高的催化活性[2].但因其制备方法多为喷涂热解法,需400℃以上温度,因此易发生相变而分解为一种富含Co的化合物[3],很难得到所期望的电极催化活性.

关键词: 尖晶石型化合物NiCo2O4, 复合镀, 析氧电极

Abstract: The Ni-NiCo2O4 composite electrodes for oxygen evolution were prepared by composite electroplating technique. In the course of plating the particles of spinel NiCo2O4/(ca.4 μm) were easily codeposited on the nickel deposited electrode forming a high rough Ni-NiCo2O4 composite plating layer. The Ni-NiCo2O4 composite electrodes exhibited low oxygen overvoltage and good stability and had two Tafel slopes smaller than that of pure Ni plating electrode.

Key words: spinel NiCo2O4, composite electroplating, oxygen evolution electrode